Earlier today we could not receive calls on one of our lines. The only thing I could find in the logs at or about the time it happened was this message. Eventually the condition went away but I am concerned about the error message and it’s meaning.
Jun 23 09:09:53] WARNING chan_dahdi.c: Ring/Off-hook in strange state 6 on channel 5.
After some Googling I get the impression that it has something to do with detecting hang-up from the calling party.
System is asterisk 126.96.36.199